'''Democritus''' (; , ''Dēmókritos'', meaning "chosen of the people"; ) was an influential Ancient Greece|Ancient Greek Pre-Socratic philosophy|pre-Socratic philosopher
primarily remembered today for his formulation of an atomic theory
of the universe
Democritus was born in Abdera, Thrace|Abdera
[#Russell|Russell, pp. 64–65.]
around 460 BC, although, some thought it was 490 BC. His exact contributions are difficult to disentangle from those of his mentor Leucippus
, as they are often mentioned together in texts. Their speculation on atoms, taken from Leucippus, bears a passing and partial resemblance to the 19th-century understanding of atomic structure that has led some to regard Democritus as more of a scientist than other Greek philosophers; however, their ideas rested on very different bases.
[Stephen Toulmin... ]